ALSA: hda - Allow digital-only I/O on ALC262 codec

Some laptops like VAIO have multiple codecs and uses ALC262 only for
the SPIDF output without analog I/O.  So far, the codec-parser assumes
the presence of analog I/O and returned an error for such a case.

This patch adds some hacks to allow the digital-only configuration for
ALC262.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 33 insertions, 10 deletions

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 4fdae06162ed..4cfa78c54398 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -306,6 +306,9 @@ struct alc_spec {
         unsigned int jack_present: 1;
         unsigned int master_sw: 1;
 
+        /* other flags */
+        unsigned int no_analog :1; /* digital I/O only */
+
         /* for virtual master */
         hda_nid_t vmaster_nid;
 #ifdef CONFIG_SND_HDA_POWER_SAVE
@@ -2019,11 +2022,13 @@ static int alc_build_controls(struct hda_codec *codec)
                                                     spec->multiout.dig_out_nid);
                 if (err < 0)
                         return err;
-                err = snd_hda_create_spdif_share_sw(codec,
-                                                    &spec->multiout);
-                if (err < 0)
-                        return err;
-                spec->multiout.share_spdif = 1;
+                if (!spec->no_analog) {
+                        err = snd_hda_create_spdif_share_sw(codec,
+                                                            &spec->multiout);
+                        if (err < 0)
+                                return err;
+                        spec->multiout.share_spdif = 1;
+                }
         }
         if (spec->dig_in_nid) {
                 err = snd_hda_create_spdif_in_ctls(codec, spec->dig_in_nid);
@@ -2032,7 +2037,8 @@ static int alc_build_controls(struct hda_codec *codec)
         }
 
         /* if we have no master control, let's create it */
-        if (!snd_hda_find_mixer_ctl(codec, "Master Playback Volume")) {
+        if (!spec->no_analog &&
+            !snd_hda_find_mixer_ctl(codec, "Master Playback Volume")) {
                 unsigned int vmaster_tlv[4];
                 snd_hda_set_vmaster_tlv(codec, spec->vmaster_nid,
                                         HDA_OUTPUT, vmaster_tlv);
@@ -2041,7 +2047,8 @@ static int alc_build_controls(struct hda_codec *codec)
                 if (err < 0)
                         return err;
         }
-        if (!snd_hda_find_mixer_ctl(codec, "Master Playback Switch")) {
+        if (!spec->no_analog &&
+            !snd_hda_find_mixer_ctl(codec, "Master Playback Switch")) {
                 err = snd_hda_add_vmaster(codec, "Master Playback Switch",
                                           NULL, alc_slave_sws);
                 if (err < 0)
@@ -3060,6 +3067,9 @@ static int alc_build_pcms(struct hda_codec *codec)
         codec->num_pcms = 1;
         codec->pcm_info = info;
 
+        if (spec->no_analog)
+                goto skip_analog;
+
         info->name = spec->stream_name_analog;
         if (spec->stream_analog_playback) {
                 if (snd_BUG_ON(!spec->multiout.dac_nids))
@@ -3083,6 +3093,7 @@ static int alc_build_pcms(struct hda_codec *codec)
                 }
         }
 
+ skip_analog:
         /* SPDIF for stream index #1 */
         if (spec->multiout.dig_out_nid || spec->dig_in_nid) {
                 codec->num_pcms = 2;
@@ -3106,6 +3117,9 @@ static int alc_build_pcms(struct hda_codec *codec)
                 codec->spdif_status_reset = 1;
         }
 
+        if (spec->no_analog)
+                return 0;
+
         /* If the use of more than one ADC is requested for the current
          * model, configure a second analog capture-only PCM.
          */
@@ -10468,8 +10482,14 @@ static int alc262_parse_auto_config(struct hda_codec *codec)
                                            alc262_ignore);
         if (err < 0)
                 return err;
-        if (!spec->autocfg.line_outs)
+        if (!spec->autocfg.line_outs) {
+                if (spec->autocfg.dig_out_pin || spec->autocfg.dig_in_pin) {
+                        spec->multiout.max_channels = 2;
+                        spec->no_analog = 1;
+                        goto dig_only;
+                }
                 return 0; /* can't find valid BIOS pin config */
+        }
         err = alc262_auto_create_multi_out_ctls(spec, &spec->autocfg);
         if (err < 0)
                 return err;
@@ -10479,8 +10499,11 @@ static int alc262_parse_auto_config(struct hda_codec *codec)
 
         spec->multiout.max_channels = spec->multiout.num_dacs * 2;
 
-        if (spec->autocfg.dig_out_pin)
+ dig_only:
+        if (spec->autocfg.dig_out_pin) {
                 spec->multiout.dig_out_nid = ALC262_DIGOUT_NID;
+                spec->dig_out_type = spec->autocfg.dig_out_type;
+        }
         if (spec->autocfg.dig_in_pin)
                 spec->dig_in_nid = ALC262_DIGIN_NID;
 
@@ -10875,7 +10898,7 @@ static int patch_alc262(struct hda_codec *codec)
                         spec->capsrc_nids = alc262_capsrc_nids;
                 }
         }
-        if (!spec->cap_mixer)
+        if (!spec->cap_mixer && !spec->no_analog)
                 set_capture_mixer(spec);
 
         spec->vmaster_nid = 0x0c;